.beijing{
    width: 800px;
    height: 400px;
    background-color: aquamarine;
    margin: 0 auto;
}

ul{
list-style: none;
float: right;
margin-right: 150px;
}
li{
    margin-top: 15px;
}

.btn{
    width: 200px;
height: 36px;
line-height: 36px;
padding: 0 15px;
border: 1px solid #dedede;
border-radius: 2px;
font-weight: 400;
cursor: pointer;
text-decoration: none;
border-coLor: #4898d5;
background-color: burlywood;
coLor: #fff;
margin-top: 60px;
margin-right: 40px;
float: right;
border-radius: 35%;
}
.left{
    float: left;
}
.border-right{
    border-right: 1px solid #555; ;
}
.poto{
    border:3px solid #555 ;
    width: 100px;
    height: 100px;
    background-color: #efefef; /* Can be set to transparent */
    border-radius: 50px;
    margin-top: 80px;
    margin-left: 150px;
    margin-right: 10px;
    line-height: 200px;
    float: left;
 
}
.label{
    position: absolute;
    top: 200px; 
    left: 185px;

   
    

}
#parent{
    width: 300px;
    height: 300px;
    /* border: solid 10px orangered; */
    margin: 0 auto;
    position: relative;
}
#parent>#child{
    width: 100px;
    height: 100px;
    background-color: blue;
    position:absolute;
    left: 8px;
    top:0;
}
#parent>#child2{
    width: 100px;
    height: 100px;
    background-color: red;
    position:absolute;
    top: 0;
    right: 0;
}
#parent>#child3{
    width: 100%;
    height: 30px;
    background-color: rgba(0,0,255,0.5);
    position:absolute;
    left: 0;
    bottom:0;
    text-align: center;
}
#uimage{
    position: absolute;
    top: 120px;
    right: -120px;
}
body{
    background-color: antiquewhite;
}
.val{
    width: 100px;
    height: 30px;
    text-align: center;
}